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Sustained-release type elastic de-icing additive as well as preparation method and application thereof

A slow-release and additive technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of poor slow-release effect, high price, loss of ice and snow removal effect, etc., achieve long-term effective release effect and increase elasticity Shape-shifting capabilities, effects that are simple to apply

Active Publication Date: 2015-02-04
南京宁通智能交通技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the amount of chemical additives developed abroad is relatively large, the production process is complicated, and the price is expensive. With the loss of active ingredients of salt storage, asphalt concrete pavement often has "holes" and "shedding" phenomena, and the slow-release effect is not good. , often loses the effect of removing ice and snow after one year of use
Domestic colleges and universities have conducted research on the technology of actively inhibiting freezing pavement through physical modification, and proposed that by adding rubber particles to increase the deformation capacity of the road surface, the ice layer will be broken under the vehicle load to reduce the adhesion between the ice layer and the road surface, but the deicing performance is not good. Obvious, and it will cause loose road surface and potholes, so it is rarely used at present

Method used

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  • Sustained-release type elastic de-icing additive as well as preparation method and application thereof
  • Sustained-release type elastic de-icing additive as well as preparation method and application thereof
  • Sustained-release type elastic de-icing additive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The slow-release elastic deicing and snow additive of the present invention is prepared by the following method:

[0030] 1) First prepare component A, use industrial grade anhydrous calcium chloride, with a purity of ≥94%; the rubber powder is a 40-mesh rubber powder prepared by pulverizing the whole tire of an automobile bias tire at room temperature, and the waterproof film-forming material is epoxy resin ; polyethylene as reinforcing agent; carbon black is a mixture of colored carbon black of type N550 and reinforcing agent TS-530 fumed silica; this embodiment selects dark brown viscous pine tar liquid, and the corrosion inhibitor selects SiO 2 Quartz sand. The above materials are weighed according to the following weights:

[0031]

[0032]

[0033] Start the twin-screw extruder for preheating, set the torque to 70Nm, the temperature of the inlet to 180°C, and the temperature of the outlet to 200°C. Fully mix the weighed anhydrous calcium chloride and rubbe...

Embodiment 2

[0041]1) First prepare component A, use the mixture of analytically pure anhydrous sodium chloride and calcium chloride with a purity of ≥95% as the freezing point depressant, and the mass ratio of the two is 2:1; 80 mesh rubber powder is crushed, and epoxy resin is used as waterproof film-forming material; polyethylene particles are used as reinforcing agent; carbon black is a mixture of reinforcing agent TS-530 fumed silica and N550 colored carbon black; this example uses dark brown Viscous pine tar liquid, sodium hydroxide powder is selected as the corrosion inhibitor material. The above materials are weighed according to the following weights:

[0042]

[0043] Start the twin-screw extruder for preheating, set the torque to 70Nm, the temperature of the inlet to 180°C, and the temperature of the outlet to 200°C. Fully mix the weighed anhydrous calcium chloride and anhydrous sodium chloride evenly, add to the feeding hopper of the twin-screw extruder, weigh the rubber po...

Embodiment 3

[0051] 1) First prepare component A, use analytically pure anhydrous calcium chloride, with a purity of ≥95%; the rubber powder is 40-mesh rubber powder pulverized by the whole tire of an automobile radial tire at room temperature, and the waterproof film-forming material is selected from tung oil; polyethylene particles are used as reinforcing agent ; Carbon black is the mixture of coloring carbon black of type N550 and reinforcing agent TS-530 fumed silica; this embodiment selects dark brown viscous pine tar liquid, and selects sodium nitrite powder as corrosion inhibitor. The above materials are weighed according to the following weights:

[0052]

[0053] Start the twin-screw extruder for preheating, set the torque to 70Nm, the inlet temperature to 180°C, and the outlet temperature to 200°C. Fully mix the weighed anhydrous calcium chloride and rubber powder evenly, add it to the feeding hopper of the twin-screw extruder, weigh the carbon black and polyethylene particles...

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Abstract

The invention discloses a sustained-release type elastic ice and snow removal additive as well as a preparation method and application thereof. The sustained-release type elastic ice and snow removal additive comprises a component A, a component B and a component C, wherein the component A comprises 25%-40% of a freezing point depressant, 30%-50% of rubber powder, 15%-25% of carbon black, 10%-20% of polyethylene and 1%-5% of pine tar oil; the component B is a waterproof film-forming material; and the component C is a corrosion inhibition material. The sustained-release type elastic ice and snow removal additive disclosed by the invention is mainly used for solving accumulated-snow coagulated-ice disasters on road surfaces, especially ramp junction and bridge floor in winter; the added additive is combined with the advantages of chemical modification and physical modification, so that not only can effective freezing point depressant components be separated out under vehicle load and environmental changes to lower the freezing point of the road surface, but also the additive can have the advantages of rubber particles, can be used for increasing the elastic deformation capability of the road surface to lower the caking capacity of the ice layer and the road surface, and therefore, the ice and the snow are easily removed.

Description

Technical field [0001] The present invention relates to the field of road materials, and in particular to an additive for asphalt mixtures used for active ice and snow removal and anti-ice condensation on road surfaces and a preparation method thereof. Background technique [0002] In most areas of southern my country, the air is humid and the temperature is low in winter. The road surface often freezes or condenses due to snowfall and freezing rain. The friction coefficient of the road surface and the lateral friction force it can provide decrease, which is harmful to driving vehicles. The driveability and safety are extremely disadvantageous. In particular, the road surfaces at ramp intersections and viaduct bridges are severely icy, requiring a large amount of manpower and machinery to clear the snow and ice on the road every year, causing huge economic losses. [0003] Traditional manual work and mechanical snow removal methods require a lot of manpower and material reso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L21/00C08L23/06C08L63/00C08L61/06C08L91/00C08K13/02C08K3/16C08K5/098C08K3/36C08K3/04C08K3/28C08K3/22C08K5/053C08L95/00
Inventor 王文峰郭良倩吴春颖刘伟牛晓伟
Owner 南京宁通智能交通技术研究院有限公司
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